June is for the Masses on Voices, and this Sunday it's something new in something old as we turn to an underloved masterpiece by Mozart that displays some of his most joyful choral writing, the "Missa longa in C," Sunday at 9pm.

Described both as Beethoven's "most humiliating public disaster" and the "expression of childlike serenity," enjoy one of the least heard of Beethoven's major works Sunday at 9pm on WCRB: the "Mass in C major."